C14C 3/20

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9970069 Sulfonatocalixarene tanning agent for leather tanning and preparation method thereforJun 18, 15May 15, 18SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
9376729 Compositions comprising at least one compound containing a carbamoyl sulfonate group and use of the same as tanning agentsJul 28, 11Jun 28, 16LANXESS DEUTSCHLAND GMBH
9212403 TopcoatMay 15, 09Dec 15, 15HONDA MOTOR CO., LTD., MIDORI HOKUYO CO., LTD.,
8945610 Condensation products based on bicyclic or polycyclic aromatics or heteroaromaticsNov 11, 08Feb 03, 15BASF SE
6991659 Production of tanned leather and products suitable thereforeJan 25, 02Jan 31, 06CLARIANT FINANCE (BVI) LIMITED
5352241 Process for retanning mineral tanned leathers with aromatic sulphonic acidsMar 29, 93Oct 04, 94Bayer Aktiengesellschaft
5264000 Aqueous solutions of synthetic tanning agentsJun 03, 91Nov 23, 93CIBA SPECIALTY CHEMICALS CORPORATION
5256317 Compositions for the treatment of leather and fursJul 02, 92Oct 26, 93CIBA SPECIALTY CHEMICALS CORPORATION
5250079 Process for the treatment of polyamide or leather substrates with sulpho group-containing aromatic compounds, compositions containing such compounds and their productionAug 07, 92Oct 05, 93Sandoz Ltd.
4247293 Sulphonated, aromatic reaction products, processes for their manufacture and their use as substances having a tanning actionFeb 12, 79Jan 27, 81CIBA SPECIALTY CHEMICALS CORPORATION